Positive shuttle motion for looms



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J. M. LINSOOTT. POSITIVE SHUTTLE MOTION FOR LOOMS.

No. 496,574. Patented May,2,1893.

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I J. M. LINSGO TT. POSITIVE SHUTTLE MOTION FOR LOOMS.

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No. 496,574. Patented May 2, 1893.

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J. M. LINSOO-TT. POSITIVE SHUTTLE MOTION FOR LOOMS.

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No. 496,574, Patented May 2, 1893.

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UNITED STATES PATENT OFFICE.

JOHN M. LINSCOTT, OF WVOROESTER, ASSIGNOR TO JOHN H. MCNAB, OF. CLINTON, MASSACHUSETTS.

POSITIVE SHUTTLE MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 496,574, dated May 2, 1893.

Application filed June 12, 1888i Serial No. 276.804- (No model.)

'To all whom it may concern.-

Be it known that I, JOHN M. LINSCOTT, a citizen of theUnited States, residing at WVorcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Positive Shuttle Motions for Looms, of which the following is a specification, reference being had to the accompanying drawings, in which Figure 1 is a sectional view of a portion of a loom embodying my invention. Fig. 2 is an enlarged view of the shuttle bars upon one side with one of the shuttles attached thereto. Fig. 3 is a front view of one of the shuttles, illustrating its mode of attachment to one of the shuttle bars. Fig. 4 is a top view of the same. Fig. 5 is a front view of a portion of the loom, showing the mechanism directly concerned in the movement of the shuttle bars. Fig. 6 is a top view of the breast beam of the loom, showing the reciprocating shuttlebars by which the shuttles are carried from one side of the fabric to the other and also showing the knife by which the two fabrics are cut apart. Fig. 7 is a top view of one of the shuttles and the opposing ends of the shuttle bars, and illustrating the method of transferring the shuttle from one of the shuttle bars to the opposite bar; and Figs. 8 and 9 show modified forms of the shuttle.

Similar letters and figures refer to similar parts in the several views.

My invention relates to the mechanism by which two shuttles are carried simultaneously through the sheds in the warp, causing an upper and lower fabric to be woven at the same time, and my invention I believe to be specially adapted to weaving plushes in which two fabrics are woven with a pile connecting them on their opposing surfaces, and when that part of my invention is so used I cut the fabrics apart by the action of a reciprocating knife blade which is actuated by the mechanism employed to carry the shuttles through the fabrics.

In the accompanying drawings A, A, denotes the loom frame, in which is 'journaled the shaft B, driven by power applied in any of the well known and usual methods. An

irregular rotary motion is conveyed to the crank shaft 0 from the shaft B by means of the eccentric gears D, D, by which the lay E is vibrated through pitmen X so as to allow a slower motion or dwell at the backward swing of the lay, affording an increased time for the passage of the shuttles through the fabrics.

Upon the shaft B are placed two bevel gears, one of which is shown at F, by which, and bevel gears engaging therewith, rotary motion is imparted to the shafts G, G, placed at right angles to the shaft B and carrying upon their outer ends the eccentric gears H, H, by which an irregular rotary motion is imparted to the eccentric gears I, I, turning .upon studs attached to the loomframe and provided with the crank pins J, J, by which a vibratory motion is given through links K to the levers K, K, pivoted at K, K, and connected by the links K K with the arms K K which extend downwardly from the sliding plates L, L, Fig. 6, sliding in ways on the breast beam of the loom. From the upper surfaces of the plates L, L, arms M, M, extend upwardly carrying the cross bars N, N. To the inner ends of the cross bars N, N, I attach the shuttle bars 0, O, laterally adj ustable in the cross bars N, N by means of the screw-sections O, O, and the nuts a, a. The opposing ends of the shuttle bars 0, O, are preferably made square, as at O to enter square holes 0 in the ends of the shuttles. Two shuttle bars are placed upon each side of the loom one directly above the other and each pair in alignment with the pair upon the opposite side of the loom.

The shuttle P is provided upon its front side with the spurs P, P, inclosing a notch P between them, which is engaged by the hooked end bof the elastic blade b,attached at b to the shuttle bar. The shuttle bars have a reciprocating motion toward and away from each other as the sliding plates L, L, are moved in their ways on the breast beam by the vibratory motion of the levers K, K, and as a shuttle is carried upon one of the shuttle bars, as shown in Fig. 7, the opposite and approaching bar, which moves in alignment with the shuttle carrying bar and also with the holes in the ends of the shuttles, will pre sent the free end of its spring beneath the as shown in Fig. 7, thereby raising it from the notch in the shuttle; the advancing spring in turn engaging the shuttle and retaining it upon its shuttle bar so the shuttle will be car- :ried to the opposite side of the fabric upon the reverse movementof the shuttle bar. The shuttles are in this manner alternately transferred from one bar to the other and therebycarried from one side of the fabric to the other, the shuttle upon the upper bars passing through the upper fabric, and the shuttle upon the lower bars passing through the lower fabric, two fabrics being thus woven simultaneously, which, in the case of plushes are connected by the pile warp in the well known manner of weaving plushes with two fabrics with a pile interposed between them. As the two fabrics are carried over the breast beam they are cut apart by the reciprocating knife plate R projecting from the plate R which slides on ways on the breast beam and is carried alternately from one side of the fabric to the other in the same manner as the shuttles are transferred, by means of the knife bars S, S, each being held in the outer ends of the cross bars N, N, and each like the shuttle bars being provided with an elastic blade S, S, having at their free ends a hook S S adapted to engage a notch S on the edge of the knife carrying plate R. As the two fabrics are separated in the center of the pile by the action of the knife blade R the lower fabric 1 is carried through the slot 0 in the breast beam to appropriate mechanism for taking up the cloth. The upper fabric 2 is carried over the top of the breast beam to the taking up mechanism. The shuttle itself is illustrated in one form in Figs. 2, 3, 4 and 7, and as there shown it contains a chamber c to receive the bobbin or cop. The body (1 of the shuttleis lessened in weight by reducing the size of the ends f, f, leaving them only large enough to inclose the holes which receive the ends of the shuttle bars.

Upon the rear side of the shuttle is a plate g, to part the slack warp threads. A preferable form of shuttle is shown in Figs. 8 and 9 and consists of a bar provided with recesses at each end to receive the ends of the shuttle bars. Upon the rear side of the bar 70 I place a plate on, pointed at each end to part the slack threads of the warp as the sh uttle goes through the shed. Armsn, 'n, ex-

tend rearward. from the bar 7.; one of which sustains the spindle p and the other having an eye 1'.

Upon the front side of the bar 7.: are the projecting spurs P, P, inclosing the notch P to be engaged by the hooked ends of the elastic blades 1), attached at b to the shuttle bars.

I do not herein claim the method by which the shuttle is engaged by and retained upon the shuttle bars as substantially the same mechanism for this purpose was shown in Letters Patent No. 164,924, granted to me on the 29th day of June, 1875; but

WVhat I do claim as of my present invention, and desire to secure by Letters Patent,

1. The combination with the shaft B and the lay of a loom of the eccentric gears D, D, shaft 0, pitman rod connecting said shaft 0 and said lay shafts G, G, driven from the shaft B, eccentric gears II, I, crank pins J, J, levers K, K, links connecting said levers with said crank pins, links K K and sliding plates L L connected with the links K K said plates carrying shuttle bars, substantially as described.

2. The combination with shaft B, of shafts G, G, bevel gears F, the eccentric gears H, I, crank-pins J, J, sliding plates L, L, intermediate connecting mechanism between said crank pins and said sliding plates, and shuttle bars carried by said plates, substantially as described.

3. The combination with the sliding plates L, L, and connected cross-arms N. N, of the shuttle bars 0, 0, said bars having screwthreaded sections and carrying check-nuts a,

.a, for adjusting the said bars longitudinally,

substantially as described.

4. The combination with sliding plates L, L, of the cross arms N, N, shuttle bars 0, 0, arranged in pairs upon each side and in the same vertical plane, and provided with screwthreaded sections 0, O, and check-nuts a, a,"for adjusting the said bars longitudinally, substantially as described.

5. The combination of the breast-beam provided with ways, plates sliding in said ways, cross bars carried by said plates, s11 nttle bars, 0, O, and knife bars S, S, carried by said cross bars, substantially as described.

6. The combination with the reciprocating shuttle bars provided with squared ends, of a shuttle K provided with recesses at each end to receive the ends of the shuttle bars and having a warp dividing plate m, and laterally projecting arms n, a, one of said projecting arms supporting the bobbin and the other arm being provided with a weft eye, substantially as described.

J. M. LINSCOTT.

Vitnesses:

RUFUS B. FOWLER, H. M. FOWLER. 

